diff options
| author | Scott Wood <scottwood@freescale.com> | 2011-06-15 01:34:39 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-07-12 12:16:36 +0200 |
| commit | 9973d54eeafcd1c3a2e89f0f59280c4c1e03e73b (patch) | |
| tree | 80a68f063e34b88d217fb669227cd1e537c884d2 /Documentation/virtual | |
| parent | KVM: PPC: e500: Eliminate shadow_pages[], and use pfns instead. (diff) | |
| download | linux-9973d54eeafcd1c3a2e89f0f59280c4c1e03e73b.tar.xz linux-9973d54eeafcd1c3a2e89f0f59280c4c1e03e73b.zip | |
KVM: PPC: e500: Support large page mappings of PFNMAP vmas.
This allows large pages to be used on guest mappings backed by things like
/dev/mem, resulting in a significant speedup when guest memory
is mapped this way (it's useful for directly-assigned MMIO, too).
This is not a substitute for hugetlbfs integration, but is useful for
configurations where devices are directly assigned on chips without an
IOMMU -- in these cases, we need guest physical and true physical to
match, and be contiguous, so static reservation and mapping via /dev/mem
is the most straightforward way to set things up.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'Documentation/virtual')
0 files changed, 0 insertions, 0 deletions